JP2005346145A - Picture processor, method and program for processing picture, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a picture processor for easily performing a cancel operation or a redo operation in a drawing operation and to provide a picture processing method, its program, and a recording medium. <P>SOLUTION: The picture processing method comprises a first movement step for moving a pointer means on a screen, which designates a position on the screen to display a picture, with the use of a first operation member; a pixel value change step for changing the pixel value of at least one pixel which is designated by the pointer means to be moved in the first movement step; a second movement step for moving the pointer means on the locus of the movement of the pointer means by the first operation member with the use of a second operation member; and a pixel value change cancel step for restoring the pixel value of at least one pixel designated by the pointer means, reversely moving along the locus in the second movement step, to the value before change in the pixel value change step. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an image processing technique for improving the efficiency of operations in a drawing operation.

  When editing information, if the undo (UNDO) operation or the redo (REDO) operation can be easily performed, the operability can be improved.

In the technique described in Patent Document 1, a history list specified by a user is stored in a state history under a program control for creating and editing an electronic document, changed documents according to a series of commands for changing the document. A technique for updating the state of a document corresponding to the items in the list is disclosed.
Japanese Patent Laid-Open No. 11-272660

  By the way, although the technique described in Patent Document 1 provides an operation method for an electronic document, it is difficult to apply it to image processing such as drawing a figure. In an electronic document, commands and operations correspond one-on-one, whereas in image processing, for example, operations for drawing a line are continuous, and commands correspond to each part constituting the line. It is not.

  The present invention has been made in view of such circumstances, and provides an image processing apparatus, an image processing method, an image processing program, and a recording medium that can easily execute a cancel operation and a redo operation in a drawing operation. Objective.

  In order to solve the above problem, an image processing apparatus according to claim 1 according to the present invention includes pointer means for designating a position on a screen for displaying an image, and first moving the pointer means on the screen. An operation member, a pixel value changing unit that changes a pixel value of at least one pixel designated by the pointer unit that is moved by the first operation member, and a locus in which the pointer unit has already been moved by the first operation member The pixel value changing means changes the pixel value of at least one pixel specified by the second operating member that moves up and the pointer means that moves backward along the trajectory by the second operating member. Pixel value change canceling means for returning to the previous value.

  An image processing apparatus according to claim 2 of the present invention is the image processing apparatus according to the invention described above, wherein the pixel value change canceling unit returns the pixel value to the previous value, and then the second And a pixel value re-changing unit that changes the pixel value of at least one pixel designated by the pointer unit that sequentially moves on the locus by the operation member to the pixel value changed by the pixel value changing unit.

  According to a third aspect of the present invention, there is provided the image processing device according to the third aspect, wherein the pixel value changing means is configured to obtain a pixel value of at least one pixel designated by the pointer means. The pixel value is changed based on the pixel value.

  The image processing apparatus according to claim 4 of the present invention is the image processing apparatus according to the invention described above, wherein the pixel value changing unit preliminarily stores a pixel value of at least one pixel designated by the pointer unit. Change to the specified pixel value.

  The image processing apparatus according to claim 5 of the present invention is the image processing apparatus according to the invention described above, wherein the first operation member is movable along a plane or a curved surface, and the movement is accompanied by the movement. Thus, the pointer means on the screen moves, the second operating member is a rotating member, and the pointer means moves on the locus that has already been moved by the rotation.

  The image processing apparatus according to claim 6 of the present invention is the image processing apparatus according to the invention described above, wherein the pixel value of at least one pixel changed by the pixel value changing unit is sequentially stored as history information. History storage means is further provided.

  The image processing apparatus according to a seventh aspect of the present invention is the image processing apparatus according to the above-described invention, wherein the pixel value change canceling unit performs the sequential operation according to the rotation of the rotating member of the second operating member. Based on the stored history information, the pixel value changed by the pixel value changing means is returned to a past value.

  The image processing apparatus according to claim 8 of the present invention is the image processing apparatus according to the invention described above, wherein the pixel value re-changing means extracts the sequentially stored history information according to the rotation of the rotating member. Sequentially advance to the current state.

  The image processing apparatus according to claim 9 of the present invention is the image processing apparatus according to the above-described invention, wherein the history information stored sequentially according to the rotation of the rotating member of the second operating member is traced back to the past. These operations are performed during the operation of returning the pixel value changed by the pixel value changing means to a past value while taking out the image, or proceeding to the current state sequentially while taking out the sequentially stored history information according to the rotation of the rotating member. The operation is interrupted, and the changing operation by the pixel value changing means is executed.

  According to a tenth aspect of the present invention, there is provided an image processing method according to the tenth aspect of the present invention, the first movement step of moving pointer means for designating a position on the screen for displaying an image on the screen by the first operation member; The pointer means by the first operating member is already moved by the pixel value changing step for changing the pixel value of at least one pixel designated by the pointer means moving in the first moving step and the second operating member. A pixel value of at least one pixel designated by pointer means that moves on the trajectory in the second movement step and reversely moves on the trajectory in the second movement step in the pixel value changing step. And a pixel value change canceling step for returning to the value before the change.

  An image processing method according to an eleventh aspect of the present invention is the image processing method according to the above-described invention, wherein after the pixel value is returned to the previous value in the pixel value change canceling step, the second And a pixel value re-changing step of changing the pixel value of at least one pixel designated by the pointer means that sequentially moves on the locus by the operation member to the pixel value changed in the pixel value changing step.

  According to a twelfth aspect of the present invention, there is provided an image processing program according to a first movement step in which pointer means for designating a position on a screen for displaying an image is moved on the screen by a first operation member; The pointer means by the first operating member is already moved by the pixel value changing step for changing the pixel value of at least one pixel designated by the pointer means moving in the first moving step and the second operating member. A pixel value of at least one pixel designated by pointer means that moves on the trajectory in the second movement step and reversely moves on the trajectory in the second movement step in the pixel value changing step. And causing the computer to execute a pixel value change canceling step for returning to the value before the change.

  An image processing program according to a thirteenth aspect of the present invention is the image processing program according to the above-described invention, wherein after the pixel value is returned to the previous value in the pixel value change canceling step, the second And a pixel value re-changing step of changing the pixel value of at least one pixel designated by the pointer means that sequentially moves on the locus by the operation member to the pixel value changed in the pixel value changing step.

  According to a fourteenth aspect of the present invention, there is provided a recording medium according to a fourteenth aspect of the present invention, wherein a first moving step of moving pointer means for designating a position on a screen for displaying an image on the screen by the first operating member; The pointer means by the first operating member has already been moved by the pixel value changing step for changing the pixel value of at least one pixel designated by the pointer means moving in the first moving step and the second operating member A pixel value of at least one pixel designated by a second movement step that moves on a locus and pointer means that moves backward on the locus in the second movement step is changed in the pixel value changing step; And causing the computer to execute a pixel value change canceling step for returning the value to the previous value.

  According to a fifteenth aspect of the present invention, in the recording medium according to the fifteenth aspect of the present invention, the second operation is performed after the pixel value is returned to the previous value in the pixel value change canceling step. The image processing apparatus further includes a pixel value re-changing step of changing a pixel value of at least one pixel designated by the pointer means that sequentially moves on the locus by the member to the pixel value changed in the pixel value changing step.

  According to the present invention, a cancel operation and a redo operation can be easily executed in a drawing operation.

[First Embodiment]
FIG. 1 is a diagram for explaining an image processing method according to the first embodiment of the present invention. FIG. 1 shows an image processing screen displayed on a display screen of a PC (personal computer), for example, and this image processing screen shows a result of a user operating a drawing software using a mouse. ing.

  In (1) of FIG. 1, the user can draw a line by dragging while pressing the left button of the mouse. Here, the thin line in the figure represents the path of the line that the user desires to draw. (2) in FIG. 1 represents a state in which a line deviating from the originally desired route is drawn because the user has made an operation mistake.

  In (3) of FIG. 1, when the user removes his / her finger from the left button and performs an operation of rotating the wheel backward, the cancel mode is automatically started. That is, the pointer follows the drawn path, and the drawn line is deleted. Further, when an operation of rotating the wheel forward is performed, a redo operation is started. That is, the pointer follows the path drawn in the past, and a line is drawn with it.

  In (4) of FIG. 1, when the user presses the left button of the mouse at a place where the user wants to cancel, the canceling operation is terminated, and in (5) of FIG. 1, the user drags while holding down the left button of the mouse. You can draw a new line from that position.

  In the image processing method described above, when moving from the drawing mode in which lines are drawn to the cancel mode, or when moving from the cancel mode to the drawing mode, the mode can be easily switched by simply operating the left mouse button and the wheel. You can modify the line. Therefore, it can be said that the method is extremely excellent in operability.

  Subsequently, a configuration of an image processing apparatus for realizing the above-described image processing method and a main processing procedure thereof will be described.

  FIG. 2 is a diagram illustrating a configuration of the image processing apparatus 10. The image processing apparatus 10 includes a display unit 11, an input unit 12, an operation unit 13, an information memory 15, a program memory 16, and a processing unit 17.

  The display unit 11 is a CRT or TFT liquid crystal display that displays an image processing screen. The input unit 12 is an interface for receiving an operation instruction input from the user, and the operation unit 13 is an input device such as a keyboard and a mouse operated by the user.

  The information memory 15 stores image data necessary for image processing and history management information related to image processing. The program memory 16 stores a program that controls each function of the image processing apparatus 10. The processing unit 17 comprehensively controls the operation of the image processing apparatus 10.

  The processing unit 17 includes an operation analysis unit 17a, a control unit 17b, and a history management unit 17c. The operation analysis unit 17 a grasps the operation amount of the operation unit 13. The control unit 17b controls the drawing operation based on the data from the operation analysis unit 17a and displays the operation result on the display unit 11. The history management unit 17 c collects history information associated with the operation and stores it in the information memory 15.

  FIG. 3 is a block diagram illustrating a data flow in the image processing apparatus 10, and FIG. 4 is a diagram illustrating a mechanism for storing history information. The operation of the image processing apparatus will be described with reference to FIGS.

  When the user clicks the left button of the mouse of the operation unit 13 to start drawing, the operation analysis unit 17a grasps the operation via the input unit 12 and transmits the operation to the control unit 17b. As shown in (1) of FIG. 4, the control unit 17b extracts an image of a predetermined area including the current pointer position as a partial image in the initial state, and transfers it to the history management unit 17c. The history management unit 17 c stores history management information (described later) related to the partial image in the information memory 15.

  That is, the partial image is obtained by extracting an area including at least one pixel at the pointer position.

  Subsequently, as illustrated in (2) of FIG. 4, the control unit 17b displays a point for drawing on the display unit 11 at the pointer position. Then, as shown in (3) of FIG. 4, an image of a predetermined area including the current pointer position is extracted as a partial image and transferred to the history management unit 17c. The history management unit 17 c stores history management information related to the partial image in the information memory 15.

  When the user drags while holding down the left button of the mouse, the operation analysis unit 17a sequentially transmits the movement direction and the movement amount to the control unit 17b, and the control unit 17b, as shown in (4) of FIG. The movement locus is displayed on the display unit 11. That is, the pixel value of at least one pixel designated by the pointer means is changed to a pixel value designated in advance. Then, when detecting that the mouse has moved a predetermined amount, the control unit 17b extracts an image of a predetermined region including the current pointer position as a partial image as shown in (5) of FIG. 4, and the history management unit 17c. Pass to. The history management unit 17 c stores history management information related to the partial image in the information memory 15.

  FIG. 5 is a diagram showing a partial image stored in the information memory 15. The partial images collected here are combined and displayed on the display unit 11 as a trajectory having a series of connections.

  Therefore, when the user lifts his / her finger from the left button and rotates the wheel backward in order to perform the cancel operation, the latest partial image stored in the information memory 15 is displayed when the wheel rotates backward by a predetermined amount. Remove. In other words, the pixel value of at least one pixel designated by the pointer that moves backward along the trajectory is returned to the value before the change. As a result, the pointer follows the drawn path, and the drawn line is deleted. Further, when the wheel is rotated forward to perform a redo operation, the next partial image stored in the information memory 15 is added to the display when the wheel rotates by a predetermined amount. As a result, the pointer follows the path drawn in the past, and a line is drawn with it.

  FIG. 6 is a diagram showing a configuration of a database stored in the information memory 15.

  FIG. 6 (1) shows the history information data 20. The history information data 20 includes “mouse pointer XY coordinates”, “partial area coordinate information”, and “partial image data”. “Mouse pointer XY coordinates” represents the coordinates of the pointer when the partial image is stored. “Partial area coordinate information” represents the position coordinates of the partial image area. For example, when the partial image area is a rectangle, the coordinates of four vertices are represented. The “partial image data” represents the partial image as pixel data. This history information data 20 is created every time a partial image is recorded.

  6 (2) shows the pen information data 21. FIG. The pen information data 21 describes the specifications of a pen for drawing, and includes “color data”, “pen shape”, “pen size”, “hardness”, “opacity”, “density”, and “Pen pressure (when using a pressure sensitive tablet)” is provided.

  “Color data” designates the color of the pen to be drawn (for example, red, blue, etc.). “Pen shape” designates the shape of the pen tip (for example, ○, □, etc.). “Pen size” specifies the size of the pen tip. “Hardness” specifies the clarity of the boundary of the pen trajectory. The harder the border line is clearly expressed, the softer the boundary line changes smoothly. “Opacity” represents the ratio of mixing with the background image. “Density” represents the density of dots constituting a drawing. "Pen pressure" records the measured value when using a pen pressure sensitive tablet.

  Next, an outline procedure of image processing will be described with reference to FIGS. The process described below is a process related to the main function of the image processing function. Therefore, even if the function is not described in the following description, the function described in the description of FIGS. 7 to 9 is included in the image processing function.

  In step S01 of FIG. 7, when the user selects the type, color, shape, etc. of the pen used for drawing, the history management unit 17c records the information in the pen information data 21 of the information memory 15. When the user starts drawing, in step S02, the control unit 17b executes a sweep process (FIG. 8) using a pen tool.

  In step T01 of FIG. 8, the control unit 17b acquires the coordinates of the pen and the partial image in accordance with the movement of the pen. In step T02, the history management unit 17c stores the history information in the information memory 15.

  When the left button of the mouse is kept pressed (No at Step T03), the drawing operation by dragging is continued. That is, in steps T04 to T05, drawing is performed according to the pen information data 21 in accordance with the movement of the mouse. Then, the drawing with the pen tool is continued by repeating the operations of steps T01 to T05.

  On the other hand, when the finger is released from the left button of the mouse (Yes in step T03), the drawing operation is finished and the process returns to FIG. Then, in steps S03 to S04 of FIG. 7, the drawing canceling process (FIG. 9) is executed after the mode is automatically switched to the canceling mode automatically.

  In steps T11 to T12 in FIG. 9, the operation analysis unit 17a detects the rotation direction and the rotation amount from the movement of the wheel that is the rotating member, and the control unit 17b calculates the corresponding portion of the state history from the rotation amount. In steps T13 to T14, the range of the history to be canceled is checked, and the partial image in the range is canceled. This return operation continues until the ESC key or the left / right button of the mouse is pressed (steps T11 to T16).

  On the other hand, if the ESC key or the right button of the mouse is pressed during this sequential canceling operation (Yes at Step T15), the canceling operation is canceled at Step T17 and the state before the canceling operation is performed is restored. .

  On the other hand, when the left button of the mouse is pressed during this sequential canceling operation (Yes in step T16), the canceling operation is stopped in steps T18 to T19, and a mode for newly drawing with the pen tool is entered.

  Returning to FIG. 7, in steps S <b> 05 to S <b> 06, the position where the cancellation is performed is specified, and the drawing operation by the pen tool is restarted from the position.

[Second Embodiment]
The second embodiment is different from the first embodiment in that drawing is performed using a pen-type operation member instead of the mouse. Accordingly, the same parts as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 10 is a diagram for explaining an image processing method according to the second embodiment of the present invention. FIG. 10 shows, for example, an image processing screen displayed on a display screen of a PC (personal computer). In this image processing screen, the result of the user operating the drawing software using a pen-type operation member is displayed. It is represented.

  In FIG. 10A, the user can draw a line by dragging the pen-type operation member while making contact with the input plane. At this time, as shown in (2) of FIG. 10, the length of the slider knob displayed on the screen changes in accordance with the sweep distance of the pen. (3) in FIG. 10 represents a state in which the sweep is completed. Then, as shown in (4) of FIG. 10, the user can cancel the drawing by performing an operation of returning the slider knob position.

  Next, an outline procedure of image processing according to the second embodiment will be described with reference to FIGS. The process described below is a process related to the main function of the image processing function. Therefore, even if the function is not described in the following description, the function described in the description of FIGS. 1 to 10 is included in the image processing function.

  In step S <b> 11 of FIG. 11, when the user selects a pen type, color, shape, or the like used for drawing, the history management unit 17 c records such information in the pen information data 21 of the information memory 15. When the user starts drawing, in step S12, the control unit 17b executes a sweep process (FIG. 12) using a pen-type member.

  In step T25 of FIG. 12, the control unit 17b acquires the coordinates of the pen and the partial image in accordance with the movement of the pen. In step T26, the history management unit 17c stores the history information in the information memory 15.

  When the pen-type input member remains pressed on the input plane (No at Step T27), the drawing operation by dragging is continued. That is, in steps T28 to T29, drawing is performed according to the pen information data 21 in accordance with the movement of the pen-type input member. Then, the drawing with the pen tool is continued by repeating the operations of steps T25 to T29.

  On the other hand, when the pen-type input member is separated from the input plane (step T27 Yes), the drawing operation is finished and the process returns to FIG. Then, in step S13 of FIG. 11, when the user operates the slider using the pen-shaped member, the drawing cancellation process (FIG. 13) shown in step S14 is executed.

  In steps T31 to T32 in FIG. 13, the operation analysis unit 17a detects the movement amount from the movement of the slider by the pen-shaped member, and the control unit 17b calculates a corresponding portion of the state history from the movement amount. Then, in steps T33 to T34, a range for combining the partial images is determined, and the partial images are combined with the images in the range. This return operation continues until the cancel button or the confirmation button attached to the pen-shaped member is pressed (steps T31 to T36).

  On the other hand, when the cancel button is pressed during the sequential cancel operation (Yes in step T35), the cancel operation is canceled in step T37, and the drawing is restored to the end of the saved history. As a result, the state before the cancellation operation is restored.

  On the other hand, when the confirmation button attached to the pen-shaped member is pressed during the sequential canceling operation (Yes at Step T36), the canceling operation is canceled at Step T38, the history information after that is deleted, and a new one is deleted. Shift to the mode for drawing with the pen tool.

  In this embodiment, partial images are combined and decomposed to represent drawing. However, the present invention is not limited to this, and the image is drawn by changing the pixel values of a plurality of pixels in the region represented by the partial image. Alternatively, the original image may be restored.

  Each function described in the above embodiment may be configured using hardware, or may be realized by reading a program describing each function into a computer using software. Each function may be configured by appropriately selecting either software or hardware.

  Furthermore, each function can be realized by causing a computer to read a program stored in a recording medium (not shown). Here, as long as the recording medium in the present embodiment can record a program and can be read by a computer, the recording format may be any form.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

The figure explaining the image processing method which concerns on the 1st Embodiment of this invention. The figure which shows the structure of an image processing apparatus. FIG. 3 is a block diagram showing a data flow in the image processing apparatus. The figure explaining the structure which preserve | saves history information. The figure which shows the partial image memorize | stored in the information memory. The figure which shows the structure of the database memorize | stored in information memory. The flowchart which shows the general | schematic procedure of an image process. The flowchart which shows the general | schematic procedure of an image process. The flowchart which shows the general | schematic procedure of an image process. The figure explaining the image processing method which concerns on the 2nd Embodiment of this invention. The flowchart which shows the general | schematic procedure of an image process. The flowchart which shows the general | schematic procedure of an image process. The flowchart which shows the general | schematic procedure of an image process.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Image processing apparatus, 11 ... Display part, 12 ... Input part, 13 ... Operation part, 15 ... Information memory, 16 ... Program memory, 17 ... Processing part, 17a ... Operation analysis part, 17b ... Control part, 17c ... History Management unit, 20... History information data, 21... Pen information data.

Claims (15)

Pointer means for specifying the position on the screen to display the image;
A first operating member for moving the pointer means on the screen;
Pixel value changing means for changing a pixel value of at least one pixel designated by pointer means moved by the first operation member;
A second operating member for moving on a locus on which the pointer means has already been moved by the first operating member;
Pixel value change canceling means for returning the pixel value of at least one pixel designated by the pointer means moving backward on the locus by the second operation member to a value before the pixel value changing means changes; An image processing apparatus comprising:   After the pixel value change canceling means returns the pixel value to the previous value, the pixel value of at least one pixel designated by the pointer means that sequentially moves on the trajectory by the second operation member, The image processing apparatus according to claim 1, further comprising a pixel value re-changing unit that changes the pixel value to a pixel value changed by the pixel value changing unit.   2. The image processing according to claim 1, wherein the pixel value changing unit changes a pixel value of at least one pixel designated by the pointer unit to a pixel value calculated based on the pixel value. apparatus.   The image processing apparatus according to claim 1, wherein the pixel value changing unit changes a pixel value of at least one pixel designated by the pointer unit to a pixel value designated in advance. The first operation member is movable along a plane or a curved surface, and the pointer means on the screen moves along with the movement,
3. The image processing apparatus according to claim 1, wherein the second operation member is a rotating member, and the pointer means moves on a locus that has already moved by the rotation.   The image processing apparatus according to claim 1, further comprising a history storage unit that sequentially stores, as history information, a pixel value of at least one pixel that is changed by the pixel value changing unit.   The pixel value change canceling means returns the pixel value changed by the pixel value changing means to a past value based on the history information stored sequentially according to the rotation of the rotating member of the second operation member. The image processing apparatus according to claim 6.   The image processing apparatus according to claim 7, wherein the pixel value re-changing unit sequentially advances the current stored state information to the current state while taking out the history information according to the rotation of the rotating member.   The operation of returning the pixel value changed by the pixel value changing means to the past value while taking out the history information stored sequentially according to the rotation of the rotating member of the second operation member to the past, or the sequentially storing 7. The change operation by the pixel value changing unit is executed by interrupting these operations in the middle of an operation of sequentially moving to the current state while taking out history information according to the rotation of the rotating member. Image processing device. A first moving step of moving pointer means for designating a position on the screen for displaying an image on the screen by a first operation member;
A pixel value changing step for changing a pixel value of at least one pixel designated by the pointer means moving in the first moving step;
A second movement step of moving the pointer means by the first operation member on a trajectory already moved by a second operation member;
A pixel value change canceling step for returning the pixel value of at least one pixel designated by the pointer means that moves backward on the locus in the second moving step to a value before changing in the pixel value changing step; An image processing method comprising:   After returning the pixel value to the previous value in the pixel value change canceling step, the pixel value of at least one pixel designated by the pointer means that sequentially moves on the trajectory by the second operation member, The image processing method according to claim 10, further comprising a pixel value re-changing step of changing to the pixel value changed in the pixel value changing step. A first moving step of moving pointer means for designating a position on the screen for displaying an image on the screen by a first operation member;
A pixel value changing step for changing a pixel value of at least one pixel designated by the pointer means moving in the first moving step;
A second movement step of moving the pointer means by the first operation member on a trajectory already moved by a second operation member;
A pixel value change canceling step for returning the pixel value of at least one pixel designated by the pointer means that moves backward on the locus in the second moving step to a value before changing in the pixel value changing step; An image processing program for causing a computer to execute.   After returning the pixel value to the previous value in the pixel value change canceling step, the pixel value of at least one pixel designated by the pointer means that sequentially moves on the trajectory by the second operation member, 13. The image processing program according to claim 12, further comprising a pixel value re-changing step for changing to the pixel value changed in the pixel value changing step. A first moving step of moving pointer means for designating a position on the screen for displaying an image on the screen by a first operation member;
A pixel value changing step for changing a pixel value of at least one pixel designated by the pointer means moving in the first moving step;
A second movement step of moving the pointer means by the first operation member on a trajectory already moved by a second operation member;
A pixel value change canceling step for returning the pixel value of at least one pixel designated by the pointer means that moves backward on the locus in the second moving step to a value before changing in the pixel value changing step; A recording medium on which an image processing program for causing a computer to execute is recorded.   After returning the pixel value to the previous value in the pixel value change canceling step, the pixel value of at least one pixel designated by the pointer means that sequentially moves on the trajectory by the second operation member, 15. The recording medium recorded with the image processing program according to claim 14, further comprising a pixel value re-changing step for changing to a pixel value changed in the pixel value changing step.

Images